ASTROSAT CZTI

Data Quality Report

Orbit 41851

Creation date: 2024-06-27T22:33:35.819940
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_099T04_9000005708_41851cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41851cztM0_level2_quad_clean.evt
Size (bytes)154,192,32032,837,760
Size147.0 MB 31.3 MB
Events in quadrant A1,199,511236,060
Events in quadrant B926,090250,043
Events in quadrant C1,304,223215,539
Events in quadrant D2,134,219160,456

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046701
B037811
C048871
D075531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1814261.433297%
B181420.110254%
C18141427.828004%
D181448626.791621%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 1814 1814 20 20 1.10% 1.10%
B 1814 1814 1 1 0.06% 0.06%
C 1814 1814 139 139 7.66% 7.66%
D 1814 1814 469 469 25.85% 25.85%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 211686 4676.04 218 214 45.2
A 14 24 134121 2960.94 218 214 45.2
A 2 79 10449 226.32 218 214 45.2
B 0 156 33710 782.8 218 212 42.8
B 4 81 27346 634.08 218 212 42.8
B 5 255 5955 134.21 218 212 42.8
C 0 10 431161 8906.88 204 205 48.4
C 15 214 72926 1502.98 204 205 48.4
C 14 254 1752 31.97 204 205 48.4
D 12 79 1095508 23087.37 190 185 47.4
D 2 249 133384 2807.59 190 185 47.4
D 12 6 88485 1861.2 190 185 47.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter